Prefer virtiofsd file handles when running as root instead of making them mandatory

We might be invoked as root from a user namespace which won't have
access to file handles.

diff --git a/mkosi/qemu.py b/mkosi/qemu.py
index 16d62f36d25da8574662b0f53caa5f8e118a4f9a..cac410ce69cd765137ffaed3c5c08c5862fa6135 100644 (file)
--- a/mkosi/qemu.py
+++ b/mkosi/qemu.py
@@ -308,7 +308,7 @@ def start_virtiofsd(config: Config, directory: Path, *, uidmap: bool) -> Iterato
         "--no-announce-submounts",
         "--sandbox=chroot",
         "--cache=always",
-        f"--inode-file-handles={'mandatory' if os.getuid() == 0 and not uidmap else 'never'}",
+        f"--inode-file-handles={'prefer' if os.getuid() == 0 and not uidmap else 'never'}",
     ]
 
     if not uidmap and want_selinux_relabel(config, directory, fatal=False):